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Quarterly Report - First Quarter 2004 <br /> � <br /> NATIONAL FREIGHT <br /> ' 2850 Loomis Road, Stockton, California <br /> INTRODUCTION <br /> At the request of Mr. Daniel Folcher of Vineland Construction Co.,Advanced GeoEnvironmental, <br /> ' Inc. (AGE) has prepared this report of environmental activities conducted at 2850 Loomis Road <br /> (site), Stockton, California.jhe scope of work included monitoring and sampling of five ground <br /> water monitoring wells onsite,analysis of the ground water samples and preparation of this report. <br /> ' The location of the site and its surroundings are illustrated on Figure 1. On site features, including <br /> the locations of the monitoring wells, are illustrated on Figure 2. <br /> ' This investigation was performed in accordance with the guidelines of the Central Valley Regional <br /> Water Quality Control Board (CVRWQCB) and the San Joaquin County Environmental Health <br /> ' Department(EHD)for investigations of underground storage tank(UST)sites and sampling ground <br /> water monitoring wells.Site background information can be found in the AGE-prepared Preliminary <br /> Investigation and Evaluation Report,dated 12 October 1999 and Additional Site Assessment Report, <br /> ' dated 09 April 2002. <br /> ' • 2.0. PROCEDURES <br /> Ground water monitoring and sampling was conducted on 12 March 2004. The procedures were <br /> ' performed in accordance with the AGE-prepared and EHD-approved Monitoring Well Installation <br /> Work Plan, dated 09 June 2000. <br /> 2,1. WELL MONITORING AND PURGING <br /> tA Solinst water level meter was used to measure the depth to ground water from the well casing tops <br /> in wells MW-1 through MW-5 to the nearest 0.01 foot. The depths to ground water are summarized <br /> ' in Table 1. <br /> After water levels were gauged, a dedicated, disposable plastic bailer was used to evacuate(purge) <br />' each monitoring well a minimum of three casing-water volumes (approximately 6.5 gallons) of <br /> water.Temperature,pH,and conductivity were measured at regular intervals using an Oakton water <br /> analyzer. The field data sheets are included in Appendix A. Purged water was stored on site in <br /> 55-gallon drums. <br />' Advanced CeoEnvironmental <br /> 1 ' <br /> 5 <br />